摘要
本文介绍了鲁北滨海三县先后引进国内外优良牧草与饲料作物153种(或品种),经过5年栽培试验,筛选出抗旱耐碱、适应鲁北滨海生态环境,经济价值较高的15种,其中:豆科6种、禾本科8种、菜类1种;并对其生育期、鲜草产量、籽实产量进行了观察测定。在此基础上,推广人工种植牧草7014.6公顷。并相应建立了草地改良试验工作站、种子田、种子收购供应、推广、技术服务,牧草收购、加工利用、销售等一条龙式的综合服务体系,获得了较大的经济效益和生态效益。经过初步的草、粮、棉轮作认为,紫花苜蓿、沙打旺以3—5年翻耕轮作一次较宜。翻耕后后作作物第一茬可增产61.95%—110.0%,第二茬比第一茬产量一般下降10%—15%,但如果结合亩施磷肥15—20千克,其增产效果更佳。
153 kinds of good herbage and forage crops were introduced to the three counties of northern Shandong seaboard region from home and abroad.Having gone through 5-year planting,15 species,which were drought and alkaline resistance,were suitable for the ecological environment of northern Shandong seaboard region and high economic value,were chosen.Among them,there were 6 legume species,8 grass species and 1 vegetable species.Their plant period,fresh grass and seed fields were observed and measured.Basing on this,planted grasses by hand 7014.6ha,and grass developing experiment station,seeding field,seeds collecting and selling station,scattering,technology services and grass-receiving-using-selling line sys- tem were established,and economic,ecological benefits have been obtained.After the preliminary grass- grain-cotton rotation,the result showed that Medicago,Astragalus should rotate once a time every 3- 5years.And after that,the following crops will increase 61.5%-110% in the first time and reduce 10% -15% in the second time.If 15-20kg/mu phosphate fertilizers were given,the yield increase effect will be better.
出处
《草业科学》
CAS
CSCD
北大核心
1993年第1期30-35,共6页
Pratacultural Science
关键词
牧草
引种
粮食作物
棉花
轮作
3 counties of northern Shandong seaboard region
herbage introduced
grass-grain-cotton rotation
